Automatically-adjustable strain-insulator house-fixture.



GiSfBURGE. v AUTOMATICALLY ADJUSTABLE ST RAIN INSULATOR HOUSE FIXTURE.

7 APPLICATION FILED MAR. 17, 1909. 930,57.

Patented Aug. 10, 1909;

O alas! WFTNESWS:

INVENTOR Z ATTORNEY this application, in which similar characters -f which Y a slde' elevation of my inven- 35.

I 9 with slots'3, 3, through which screws 4, 4, arev driven into the house or other fixed support.

' UNIilE-D sinus unto-El cnAR'LEs s. BURGE, or TAGOMA, WASHINGTON.

-'A'U'JlOMA'lICALLY-ADJ'USEliJhBLE STBAIN-INSULATOR HOUSE-FIXTURE.

Application filed. March 17, 1909. Serial No. 484,067.

To all whom it mag concern:

Be it known that 1, CHARLES S. Bones, a citizen-of the United States, and a resident of Tacoma, inthe county of Pierce and State of Washington, have invented certain new and useful Improvements in Automatically-Adjustable Strain-Insulator House-Fixtures, of

which the following is a specification.

My invention relates to an improvement in automatically adjustable, strain insulator fixtures for attachment to houses, and is suited forgeneral use as a strain-insulator fixture forattachment to a fixed support, but it is especially designed for furnishing suitable attachments for the insulators used for the house endof the drop from the main telephone or other electric wire line. I

Hitherto, insulators adapted for a special use on the inain line have been provided with automatically adjustable, fixtures, but the house end of the drop requires a strain insulator, the attachments for which should lie in the line of strain and thus be capable of resisting the strain without the use of an undue amount of material and, at the same time, should be capable of self adjustment into said line of strain. My fixture satisfies these requirements.

- Iyinvention is nying sheet of drawings forming a part of refer to similar parts throughout, and in Figure 1 is tion. Fig. 2 is a lan view of the same and 3 is a front e evation of the house plate and eye as shown in Fig.1.

Y'More specifically: -1 is a plate provided The-distance between these. slots is preferably such that both screws may find secure clevis 5 providedfwitha central notch 5 is 5. engaged. with eye '2. Clevis 5 is furnished attachment in a 2x4 joist as used in ordinary J I -frame houses. The'plate 1 has the eye or staple 2 'ri'gidlyattached thereto and standperpendi'cul'ar.xtherefrom and in a .ver.- tical plane when the fixture is properly at tache'd as shown in planiviewl in F g. 2., A

5 with a transverse hole through the end of each leg, said holesjregisteringt A strain insulator 7 has a circumierentia groove 7? and also has an axial hole. Said insulator is Specification of Letters Patent.

illustrated in the accompa- Patented Aug. 10, 1909.

clevis is shown in dotted outlines at -7.-

Similarly, in Fig. 2 another position of these parts is shown indotted outline at 7. It may be noted that, these parts can readily occupy any other position relative to plate 1 r in which the strain on drop 8 may ordinarily' require them to lie and yet' the several resist said strain. Whe'n'in' use the strain partsof the fixture be in proper relation tov from drop 8 on pin 6-is sufficient to retain the same in place in the clevis without further fastening than illustrated. The. notch 5 in clevis 5 serves to maintain the eye 2 in engagement with-this part of the l clevls regard as-atj". will be always at right angles to pinth'which is desirable.

ess of the position of the clevis,

This insures that the line of strain Having. thus described my invention,

1'. In an automaticallyeadjustable, straininsulator, house fixture,; the combination of. anilate having'holes or slots suited for the re- .tion of screws; an eye rigidly attached to 'said plate, a clevis'suited to engage with said eye and having transverseregistering holes suited toreceive a pin, an insulator having a" circumferential groove and an axlal hole.

substahtially at right angles to the plane of a pin and said insulator in said clevis with said hole registering with the said holes in said clevis, and a pin adapted to lie in said holes in said clevis and said;

said groove, said hole bein suited to receive eing suited to lie insulator and retain said insulator in said clevis. q I 2. In an automatically-adjustable, straininsulator, house fixture, :the' combination of eye and having a central IlOtOliiIlitS crotch suited to localize said engagementwith said eye, also having transverse, re istering'holes suited to receive a pin, an insu atorhayili a plate having holes'or slots; suited for the re ception of screws, an "eye rigidly attached to I said plate, a clevis uited to engage with'saidcircumferential groove and an axlai nole-sub- I" stantially at ri%ht angles to the plane of said.

groove, said ho e being suited to rece ve a pin and said insulator being suited to lie in said olevis with said hole registering with the. said holes in said clevis, and a pin adapted to lie in said holes in said clevis and said insulator and retain said insulator in said clevis.

I sighed at h m,- i1'the'oounty of Whatcom' and State of :W -m a V CHARLES "S;

Witnes es:

, 'ROBERT Mom,

0, L. PAGE. 

